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Finding the Fourth Proportional to 70,495.48, 105,709.74 and 40,922.38

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Solution

The fourth proportional to 70,495.48, 105,709.74 and 40,922.38 is: 61,364.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,495.48 : 105,709.74 = 40,922.38 : x
  2. Step 2: Convert to fraction form
    70,495.48/105,709.74 = 40,922.38/x
  3. Step 3: Cross multiply
    70,495.48x = 105,709.74 × 40,922.38
  4. Step 4: Simplify right side
    70,495.48x = 4,325,894,149.98
  5. Step 5: Solve for x
    x = 4,325,894,149.98/70,495.48
  6. Step 6: Final answer
    x = 61,364.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.